Question

Select the right option which indicates the correct code for the word or letter given in the question:
If CHAIR is coded as FKDLU, then RAID is coded as?
A) ULGD
B) ULKG
C) ULDG
D) UDLG
E) UDGL

Answer 1

Hint: To solve this question, we first write down the English alphabet along with their corresponding number. For example: A-1, B-2 and so on. Next, we try to figure out the relationship between the letters in the two words, first letter in word-1 and first letter in word-2 until we get a pattern. There might be many patterns, so we need to make sure that the condition is applicable to all the sets of letters.

Complete step by step solution:
Let’s write down the English alphabet along with their corresponding number or position starting from A and ending at Z.
A-1, B-2, C-3, D-4, E-5, F-6, G-7, H-8, I-9, J-10, K-11, L-12, M-13, N-14, O-15, P-16, Q-17, R-18, S-19, T-20, U-21, V-22, W-23, X-24, Y-25, Z-26.
Let word-1 be: CHAIR
Let word-2 be: FKDLU
Let’s write the letters of both the words in the same places together as sets.
(C, F) (H, K) (A, D) (I, L) (R, U)
Start analyzing the pattern from the first set.
C is the third letter and F is the sixth letter.
H is the eighth letter and K is the eleventh letter.
A is the first letter and D is the fourth letter.
I is the ninth letter and L is the twelfth letter.
R is the eighteenth letter and U is the twenty-first letter.
The pattern is: the difference between the two numbers is 3. In other words, there are two letters between the given letters.
Now, we have the pattern. We will use this to find out the code for RAID:
R is the eighteenth letter, so we want the twenty-first letter which is U.
A is the first letter, we want the fourth letter which is D.
I is the ninth letter, we want the twelfth letter which is L.
D is the fourth letter, we want the seventh letter which is G.
Our code is: UDLG

Therefore, the correct option is D

Note: Students make two very common mistakes.
When C is coded as F, F is not coded as C. we should not interchange the letters.
When we are trying to figure out the pattern, we should examine all the letters, and not just the first pair and come to a conclusion.